Nut-lock.



J. V. DUCKETT.

NUT LOCK. APPLICATION HLED MAY 2. 1914.

1,153,898. PatentedSept. 21, 1915.

c AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA saarns ramani? :stron JAMES V.DUCKETT, .on HILLsIDE, coLonano. r

nor-Look.

To all wlom it may concern Be it known that I, JAMES V. DUCKETT, acitizen of the United States, residing at Hillside in the county ofFremont and State of Colorado, have invented certain new and usefulImprovements in Nut-Locks, of which the following is a specification.

My invention relates to nut looks.

The primary Object of myinvention is to provide an improved lockingdevice associated with the nut and bolt for looking the nut upon thebolt and preventing the nut from having outward rotation on the bolt.-

Another Object of my invention is to provide an improved nut havingnovel means in connection therewith for removably receiving the lookingdevice.

A further Object of my invention is to provide a device that is simplein construction, eiicient in operation and one that can be manufacturedand placed upon the market at a minimum cost.

.Other objects as well as the nature, characteristic features and scopeof my invention will be more readily understood from the 'followingdescription taken in connection with the accompanying drawings andpointed out in the claim. s

In the drawings: Figure 1 is a side elevational view of my inventionshowing the nut in locked position on the bolt. Fig. 2 is a transversesectional view taken on the line 2-2 of Fig. l in the direction in whichthe arrow points and illustrating to advantage the construction of thelooking element. Fig. 3 is a. longitudinal sectional view of myinvention, partly in elevation showing especially the manner of mountingthe looking element.

Referring more particularly to the drawings in which similar referencenumerais designate corresponding parts throughout the different Views, Iprovide a bolt 1 with a head 2, the outer end of the bolt being screwthreaded as at 3 and providedwith a longitudinal groove 4, one side 5 ofwhich is arranged parallel to a tangent on the circumference of the boltand the other side 6 being arranged radially for the purpose to behereinafter described.

A nut 7 having a screw threaded Opening 8 therethrough is removablymounted upon the bolt. The nut is provided on its under surface adjacentthe Opening 8 with a substantial semi-annular recess 9, the latterhavingone end thereof in communication With Specificaton of Letters Patent;Patgntgd Sapi; 21, 1915 Application filed Maya 1914. Serial NO. 335,988.

one of the-outer edges ofthe nut by means of a' tortuous-way 10, ofadepth Similar to the depth of the; recess 9. The way 10 is arrangedtangentially to the opening 8 and parallol with one side edge of the nutto a point adjacent and adjoining said edge, thence at right angles tothe first mentioned edge. v p

Removably disposed in the recess 9 and the way 10 is a looking element11 which conforms substantially 'to the contour of the recess and wayand because of this fact longitdinal and lateral movement of the elementis prevented. In this instance the locking element is preferably formedfrom a strip of rigid metal which has the inner end thereof bentslightly inwardly to form a tooth 12 for engagement within the groove 4in the bolt. The other or outer terminal of the looking elementprojectslaterally beyond one side of the nut and constitutes a grippingpiece for facilitating the removal of the element when it is desired toremove the nut from the bolt when the nut and bolt are not in anoperative position and when the looking element is jammed in the recessand the The operation of my clevice is as follows: hen it is desired toplace a nut in locked position on the bolt, the looking element 11 isplaced within the recess 9 and the way 10 comnunicating therewith andthe nut is then screwed upon the bolt. in the ordinary manner until thesame has reached the desired place and until the inner end 12 of thelooking element bears against the side 6 of the groove 4., the latterforming a substan- 'tially abutting shoulder for the element andpositively prevents the nut from being worked outwardly upon the bolt.

It can be easily seen by those skilled in the art that I have provided adevice that is simple in construction, and composed of a few simpleparts that can be easily manufactured and when manufactured can beplaced upon the market and sold at a minimum cost.

I desire to lay great stress upon the positioning of the recess and wayhaving the looking element removably associated therewith as this formsthe most essential feature of my invention.

It will be understood that the above description and accompanyingdrawings comrehend only the general and preferred emloodiment of myinvention and that-various minor changes in details of construction,

proportion and arrangement of 'the parts may be made within' the seopeof the appended claim and -withoutsacrificing any of the advantages ofmy invention. l

Having thus fully described my invention WhatI claim as new and desireto secnre by recess and thenceat right angles to one edge of the nut,said way being of a 'depth similar to the depth of the rees s, a lookingelement removably mounted 111 and conforming to the contour of the,recess and way said way preventing lateral and -longitudinal r '20movement of *sa d element n sad recess', the v inner end of the'lockingelement being bent' inwardly to formfla tooth for engagement withthegroove for preventing rotation of 'the n'ut, and the .outer end of the*looking' element projecting beyond the side of: the nut toform a grppngpece for facilitatin'g the disengagement of the elementfromthe nut.` V

In testimony whereof I affix 'my-signature in presence of twowitnesses.`

JAMES DUCKETT.

V Wtnesses: g

VVALTER WALSH, C. H. L A IT Gopes of this patet-may be 'obtained forfive cents; each, by adressing the Gommissioner of Patent;

- Washington, D. C.

